Milking device.



W. LBKB.

MILKING DEVICE.

APPLICATION FILED APB.. 25, 1913.

\Eli...s

Patented Mar. 10, 1914.

w-wk www UITED y STATES PATENT OFFICE.

WILHELM Luismi, or .'ennsmu. GERMANY,

MILxINe DEVICE.

specification of Letters PaternaA Patented Mar. 10, 1914. Appiaenonfnie April 25, 191s. semi Nu. 763,654.

as indicated in dotted'lines in Fig. 1. When the sleeve arises to its highest osition, the nozzle a, closes the grooves n. Xt the up er 5 end of the sleeve e, is a concentrically isso posed funnel shaped cap L, formed with a vent opening g. The sleeve e, is formed with a vent opening f, and a slot 7c, and 4 through the slot passes a screw Z by means of which the' sleeve is held to the cap. The 35 slot le, will permit the sleeve e, to rise in the cap, and the vent openings f and g, will register and air will rush into the space al and compress the elastic sleeve z', which wi assume the position shown in dotted lines in 70 Fig. 1. The suction device creates a vacuum in sleeve z', and when the air rushes in` the space d, and collapses said tube 2'," it exerts a slight pressure on the teat,- this pressure actionof the sleeve 75 To all whom it may concern Be it known that I, WILHELM LBnn, a subject of theGerinan Emperor, and resident of llreslau, Germany, have invented 'l5-certain .new and useful Improvements in Milking Devices, of which the following is a specication. l 4 The present invention relates to a milking apparatus in which each milking device comprises a central elastic tube which sur rounds ateat, and a spaced sleeve which surrounds said central tube, the sleeve being 'moved in an upward direction during the suction operation. In the upward motion of the outer sleeve it strikes the udder and produces a kneadin action on saine, means eilig provided to a mit air in the space between the, sleeves to allow the outer sleeve follows the to assume its normal shape.

The invention comprehends improvements in the construction and arrangement of parts to produce the necessary motion, whereby'eife'ctive and elicient milking will follow. l In the accompanyin drawing; Figure 1 is a vertical-section o one of the milking devices, the suctiony device being removed; Fig. 2 is a horizontal'section on line AWB of Fig. l; Fig. 3 is a view similar to Fig. l, but illustrating another form of the invention; Fig. 4 is adetail vertical section of the lower portion of a different form of the milking device; Fig. 5 is aA vertical section l of an air throttling device of the suction ducts; Fig. 6 is a top view of the saine.

In the milking device shown in F ig. 1, z'

is a central elastic tube which surrounds the teat. At the lower end of the tube z', is se-y cured a nozzle Z), provided with a small central duct m. A slccve e, is concentrically disposed with respect to tube 2', and it is formed at its lower end with a nozzle a, which surrouin'ls the nozzle The nozzle a is connected to a tube, leading to a suction device (not shown in the drawing), so that air from the space c, formed in tube i', as well as air troni tlic annular space cl, formed between thc tubes i and c, of thc milking device may hc witlnli'awn; that thc air from thc space d, may be withdrawn, thc o ntci' periphery of thc nozzle b being provided with longitudinal tapering grooves n. When the suction device is operated, the air in thc space al, is drawn through the grooves vi, and ovvin'g to the outside atniosphcric prcssure on thc sleeve e, the latter is drawn up immediately e, gently/'striking the. udder, and thereby completes the two movements necessary t0 draw the milk. These two mov ments closely follow cach other, and last o ,yl mo,4 mentarily for immediatel into space d, the sleeve e, dr normal position. Then the again in communication with the space d, and the operation is repeated.

ops again to its The vertical reciprocation of the sleeve e, '85

and screw Z, and at is limited by the slot c,

prevents rotation the saine time the slot c of the sleeve and cap.

In Fig. 3, the cap It is located within the sleeve e', the upper portion of which is pro- 90 ,vided with a rubber ring 1', bearing against the udder. The cap la is providedl with a groove 7,, in which the screw l fits to guide the device during its vertical displacements. The elastic tube z" roundedend of sleeve k'.

Fig. 4 shows a constructive form of the I lower' portion of the milking device in'which the nozzle b is provided with radial iliclined ducts w a" o enin within the central duct fm. instead of longitudinal grooves 'as shown at n, in Fig. l.

For 'producing large vertical displaceincnts of the milking sleeves and a corresponding kneadingaction on the u dder, a

pnlsator is inserted iu thc ducts connecting the milking vcsscl with the suction device. 'lwo or four of such connecting ducts may bc provided, because it is convenient to al tcrnately work the four portions of theill` udder, instead olE working saine simultaneonsly. It is consequently necessary to throtthe air rushes so suction action is.A

is secured at the upper 95 tle more or less said connecting,l ducts during certain interlapses ottime.'

The present invention has for a further object to operate throttling of the air from the suction device by means of the air flowrom the milking vessel. ject in view a smal-l turbine or blade wheel is inserted in said ducts which wheel is continuously rotated by the air iowing from the milking vessels. Said wheel, the speed ot which is adjustable, is conveniently secured at the milk collecting vessel and provided with a device, such as a segment, tor instance, for cutting ott the communication 'with the ducts of the milking devices, in such a manner that, during the rotation of said wheel, the various ducts from the milking vessels are successively closed more or less by means of said device. lt has been proposed to produce'such pulsations in the ducts from the milkingI vessels by providing` a rotatable bar which is alternately tippedin either direction by the milk flowing trom the milkingvessels in such a manner that the milk receiving vessels provided at either side of said bar become connected with the ducts from the milking vessels. As the momentary interruptions within the ducts leading1 from, the milking vessels to the suction device, depend upon the small angle et' oscillation oic the bar; and upon the momentary duration ot' the throwing over ot said bar, strong pulsations, like that produced by the above blade wheel, cannot be got. Such strongl pulsations areflneedful for causing the starting ol the downward motions `of the milking vessels, which motions produce the lmeadiny action onuthe udder. Further drawbacks of the rotatable bar conin that the ductsJ connecting the milk vessels to the suction device cannot be shut oit' successively and unitormly, and in that the momentary interception docs ,not de pend upon the uniform air sucking, but upon the continuously varying; amount oli sucked milk, and consequently said interceptions cannot be produced at regular .intervals. i

lfig's. 5 and (l show the improved device. At, the milk collecting)v vessel o provided a box 7) into which open two sucking ducts y, y', from the milking vessels which ducts are inclined l2@ degrees with. respect to each otl'ier. l`l'irough an aperture 1", at the lowerinflist point ot the bottom ol said box {which/intiem may form the top ot the millecollecting vessel) milk .may llow into said collecting vv. libe interior out the boi; 7/ communcates with the milk re ceptacle 0 on which said box is mounted and to which is connected the main suction duets. rlhe s'lufftion'duct s, shown in Fig. 5 is connected to a suitable suction device, not shown,

l/Vithm the. box j) is located the somewhat "il ith this ob- 'i Leonesa' heavy turbine or blade wheel t provided with blades n at about the two thirds of its periphery while the remaining portion of said periphery is provided with a segment 0J. 'Ihel'atter aswell as the blades are close to the wall of the box p without touching same. The air current from g and q causes the wheel t to rotate slowly, owing to its weight, and said air current is shut oli when the segment 'ai is in front of the parts ot' the ducts g and Q so that the sucking action in said ducts is considerably lowered during this` latter period. In order to secure the continuous rotary motion of the Wheel t, an air inlet 'w is provided.

Having now fully described my said inl `vention,` what l claim and desire to secure by Letters Patent, is:

l. A milking device comprising a central.

elastic tube formedV with a duct, an outer tube spaced from the central tube, and having a vent opening, the outer tube being reduced at its lower end 'and embracing the lower end ot the central tube, there being passages termed in the lower portion of the central tubo to form communication between the central tube and the space between said two tubes, a cap slidably-engaging the outer tube, said cap having a vent opening, and means tor limitingr the sliding movement betweeuthe outer tube and the cap, whereby when suction is applied to the lower end et the outer tube, the air will be withdrawn from said tubes and the outer tube will rise and admit air through the vents and exert pressure on the adder and cause the inner tube tocollapse and exert pressure on the teat.

2. A milking device comprising inner elastic tube to engage a teat, a nozzle at the lower end oi the inner tube, said nozzle havn ing air vents, an outer tube spaced from the inner tube and reduced at its lower end te engage the nozzle, the vent openings in the nozzle allordinr communication between the space termed between the inner and outer tubes and the reduced portion et said outer tube when the parts are in normal position, the outer tube having a vent opening, and a depending cap supported by the inner tube and termed with a vent opening, said cap being positioned to form a support on which the outer tube slides, whereby when suction is applied to the lower ends of the tubes air will be withdrawn from both tubes and cause the outer sube to rise and subfseoncntly will be admitted through the vent openings the outer tube and the cap and canse the i nner tube to collapse.

.A milking device comprising an inner tube adapted to embrace a teat, nozzle at the lower en'd ot the inner tube, said nozzle havingl vents eispesed somo distance below retlueetl und ttingurotnnl the nozzle, the rent openings in the nozzle, nell'ortlingr eolninunirulion between the `spare, formed between the inne; untl outer tubes tnnl the relut'etl portion of ,mul outer tubey when the parte4 ure iu norninl position., n tzup nxetnber :utppnt'tetl vby the inner tube :nul slidnbly menging the outer tubesuitl enplnelnber turing e rent 'opening untl lneuns for l'uuit inle the nzoveuuntV ot the outer tube. whereby when Quetion is upplietl to the retlueetl entl nlt the outer tubeT :tir will be simultaneously witlulruwn vl'ront the tubes un l the outer tube will rise :nul close the vents in the nozzle and the vent' openings in the outer tube nntl the rap will register uutl zuhnit :t Suppl)7 ol nir to t he npute between the tubes und thereby eollupse the inner tube und return the outer tube to norlnnl position.

l. milking leviee eoxnprisine; n eentrul elustittube huving :L nozzle nt its lower elnl7 seid nozzle having n duet and vent openings, an outer tube surrounding and spaced `front the inner tube und formed with it vent opelr ingl neer ith` upper end, the lower end ofV the Ylornletl between the inner und outer tubes' :unl the reduced portion ol' Suid outer tube when the purlA nre in nox-nml position, e cup having u rent opening to eoperute with the vent opening in the outer tube the outer 'tube being in sliding eontuet with the cap, n tube eonnertetl to the lower end of the outer tube, und :t pulsntor in the tube, whereby `when suetion is npplietl to the tubes, the air will be witlnlruwn, unil enuse the outer tube to rise tnnl the vente in the nozzle to close :nul the rent openingg in the enp and outer tube to regib-te nntl zuhnit', nir to the space between the two tubes und eollupse the inner tube.

lin testimony whereof I` have hereunto set; my luuul in presenee ol two witnesses.

WILHELM LBKF.

Vlvil'nesses:

ERNST KArz, Enns-'1' Binnen. 

